Ferrari doesn't make motorcycles. At least, not officially... but that fact hasn't stopped a number of custom cycle makers from taking matters into their own hands. Perhaps the most famous Maranello-inspired two-wheeler was made by Arlen Ness, but that one's not all that practical in conception. We would imagine a Ferrari motorcycle to be a truly sporting machine, equally as comfortable on the race track as the street, or, more realistically, being shown off in one's garage. Ferrari seems to agree, as the only cycle ever created that bears an official Ferrari chassis number SF-01M has true sporting pretensions.

Built by David Kay Engineering and completed in 1995, this one-and-only Ferrari motorcycle sports a DOHC engine displacing 900cc and putting out 105 horsepower at 8,800rpm. The only styling choice we take exception with are the Testarossa-style strakes on either side, but nothing's perfect, right? So, what's the only officially official Ferrari bike worth? We'll find out for sure when the auction ends on the 20th, but the expected price is between 325,000-375,000 Swiss francs, or around $300K in U.S. dollars.